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20. Solve: 15-2(2x-1) |
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Answer» 15 – 2(2x – 1) < 15, X ∈ Z.⇒ 15 – 4x + 2 < 15⇒ 17 – 4x < 15⇒ -4x < 15 – 17⇒ -4x < -2⇒ (-4/-4)x > -2/-4 = 1/2 (Dividing by -4)∴ x 1, 2, 3, 4, 5,….∴ Solution SET = {1, 2, 3, 4, 5,….}Ans .b) |
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